# Incorrect duration due to invalid date or time format (Tasks import)

## Question

Why is the *duration* header displayed incorrectly when I upload the tasks file, requiring me to enter it manually?

## Answer

When the duration is displayed incorrectly, it suggests that the task start or end date may contain errors that the platform is unable to recognize as valid. As a result, the duration must be entered manually.

In some cases, users include incorrect symbols (for example, 01-02-2026) or time formats such as AM/PM. This causes the platform to interpret the time as invalid, so we recommend carefully reviewing and correcting the date and time fields.

![](/files/f4bae6bf6d11cdb5d9cb6d1bfb22c44b53f25456)


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